A useful Firefox extension for people who would like to share cached “bookmarks” between several workstations:
ScrapBook – Firefox Extension
ScrapBook @ Mozilla Update
BTW I had a similar idea for a long time. My architecture would be more flexible though, allowing any client (not only Firefox), not require any client-side configuration and provide even more useful features. I intend to implement it as soon as time permits as I really miss such a power app. In the meantime, ScrapBook serves as an interim solution.